(4x^2+2x+5)+(7x^2-5x+2)=

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Solution for (4x^2+2x+5)+(7x^2-5x+2)= equation:


Simplifying
(4x2 + 2x + 5) + (7x2 + -5x + 2) = 0

Reorder the terms:
(5 + 2x + 4x2) + (7x2 + -5x + 2) = 0

Remove parenthesis around (5 + 2x + 4x2)
5 + 2x + 4x2 + (7x2 + -5x + 2) = 0

Reorder the terms:
5 + 2x + 4x2 + (2 + -5x + 7x2) = 0

Remove parenthesis around (2 + -5x + 7x2)
5 + 2x + 4x2 + 2 + -5x + 7x2 = 0

Reorder the terms:
5 + 2 + 2x + -5x + 4x2 + 7x2 = 0

Combine like terms: 5 + 2 = 7
7 + 2x + -5x + 4x2 + 7x2 = 0

Combine like terms: 2x + -5x = -3x
7 + -3x + 4x2 + 7x2 = 0

Combine like terms: 4x2 + 7x2 = 11x2
7 + -3x + 11x2 = 0

Solving
7 + -3x + 11x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
11 the coefficient of the squared term: 

Divide each side by '11'.
0.6363636364 + -0.2727272727x + x2 = 0

Move the constant term to the right:

Add '-0.6363636364' to each side of the equation.
0.6363636364 + -0.2727272727x + -0.6363636364 + x2 = 0 + -0.6363636364

Reorder the terms:
0.6363636364 + -0.6363636364 + -0.2727272727x + x2 = 0 + -0.6363636364

Combine like terms: 0.6363636364 + -0.6363636364 = 0.0000000000
0.0000000000 + -0.2727272727x + x2 = 0 + -0.6363636364
-0.2727272727x + x2 = 0 + -0.6363636364

Combine like terms: 0 + -0.6363636364 = -0.6363636364
-0.2727272727x + x2 = -0.6363636364

The x term is -0.2727272727x.  Take half its coefficient (-0.1363636364).
Square it (0.01859504133) and add it to both sides.

Add '0.01859504133' to each side of the equation.
-0.2727272727x + 0.01859504133 + x2 = -0.6363636364 + 0.01859504133

Reorder the terms:
0.01859504133 + -0.2727272727x + x2 = -0.6363636364 + 0.01859504133

Combine like terms: -0.6363636364 + 0.01859504133 = -0.61776859507
0.01859504133 + -0.2727272727x + x2 = -0.61776859507

Factor a perfect square on the left side:
(x + -0.1363636364)(x + -0.1363636364) = -0.61776859507

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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